Electronic device and antenna control method

Abstract

The application provides an electronic device and an antenna control method. The electronic device comprises an antenna assembly, which comprises: a first radiation source; a first radiation branch; a first matching circuit arranged between a feed point of the first radiation branch and the first radiation source, and used for tuning the first radiation branch to a first resonance mode; a second radiation branch comprising a third end, a fourth end and a connection point; and a second matching circuit arranged between the connection point and the ground, and used for adjusting a resonance mode of the second radiation branch; when the resonance mode of the second radiation branch is the first resonance mode, the second radiation branch and the first radiation branch jointly perform the transmission and reception of a first frequency band signal; when the resonance mode of the second radiation branch is a second resonance mode, the second radiation branch performs the transmission and reception of a second frequency band signal; wherein the first frequency band is a GPS L5 frequency band, and the second frequency band is an MHB frequency band.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of communication, more particularly, to an electronic device and an antenna control method. BACKGROUND

[0002] With the development of communication technology, the antenna as an important component of the communication system largely determines the performance of the communication system, therefore, it is increasingly important to design high-performance antennas. Moreover, with the popularity of smart electronic devices such as smart phones, tablets and the like, users have increasingly high requirements for the user experience of smart electronic devices, and the design and performance of the antenna directly affect the user experience of the smart electronic device. SUMMARY

[0003] The present application provides an electronic device and an antenna control method. The following introduces each aspect of the embodiments of the present application.

[0004] In a first aspect, an electronic device is provided, comprising an antenna assembly, the antenna assembly comprising: a first radiating branch comprising a first end and a second end and a feed point disposed between the first end and the second end, the first end being configured to be grounded, the feed point being connected to a first radiation source; a first matching circuit disposed between the feed point and the first radiation source, configured to tune a resonance mode of the first radiating branch to a first resonance mode, so that the first radiating branch transmits and receives a first frequency band signal; a second radiating branch comprising a third end and a fourth end and a connection point disposed between the third end and the fourth end, the fourth end being configured to be grounded; a second matching circuit disposed between the connection point and the ground, configured to adjust a resonance mode of the second radiating branch, the resonance mode of the second radiating branch comprising the first resonance mode and a second resonance mode; when the resonance mode of the second radiating branch is the first resonance mode, the second radiating branch and the first radiating branch jointly transmit and receive the first frequency band signal; when the resonance mode of the second radiating branch is the second resonance mode, the second radiating branch transmits and receives a second frequency band signal; wherein the first frequency band is a GPS L5 frequency band, and the second frequency band is an MHB frequency band.

[0005] Optionally, the second matching circuit is further configured to adjust the resonance mode of the second radiating branch according to a use scenario of the electronic device; the use scenario comprises a navigation scenario and a non-navigation scenario, in the non-navigation scenario, the second matching circuit is configured to tune the second radiating branch to the second resonance mode, so that the second radiating branch transmits and receives the second frequency band signal; in the navigation scenario, the second matching circuit is configured to tune the second radiating branch to the first resonance mode, so that the second radiating branch and the first radiating branch jointly transmit and receive the first frequency band signal.

[0006] Optionally, the MHB band includes multiple sub-bands; the second matching circuit includes multiple tuning elements, which include a first type of tuning element and a second type of tuning element. The first type of tuning element is used to adjust the resonant frequency of the second radiating stub to multiple sub-bands in the MHB band, and the second type of tuning element is used to adjust the resonant frequency of the second radiating stub to a first target frequency band. The first target frequency band is configured such that when the resonant frequency of the second radiating stub is the first target frequency band, the currents of the first radiating stub and the second radiating stub are in the same direction, and the antenna assembly enhances the radiation of the first frequency band signal. The second matching circuit is further used to: in the non-navigation scenario, control the first target element in the first type of tuning element to conduct with the connection point to adjust the resonant frequency of the second radiating stub to the target sub-band; in the navigation scenario, control the second type of tuning element to conduct with the connection point to adjust the resonant frequency of the second radiating stub to the target frequency band.

[0007] Optionally, the second matching circuit further includes a first switching circuit, which includes a plurality of first terminals and a plurality of second terminals. The plurality of first terminals are connected to the connection point, and the plurality of second terminals are respectively connected to the first terminals of the plurality of tuning elements. The second terminals of the plurality of tuning elements are all grounded. The matching circuit is further configured to: adjust the conduction state of the plurality of first terminals and the plurality of second terminals of the first switching circuit according to the usage scenario, so as to adjust the conduction state of the first type of resonant tuning element and the second type of tuning element with the connection point.

[0008] Optionally, the first matching circuit includes a first capacitor, a second capacitor, and a first inductor; wherein, a first terminal of the first capacitor is connected to the feed point, a second terminal of the first capacitor is connected to the first terminal of the second capacitor, a second terminal of the second capacitor is connected to the first radiation source, a first terminal of the first inductor is connected to the second terminal of the first capacitor, and a second terminal of the first inductor is grounded.

[0009] Optionally, the first capacitor is an adjustable capacitor, configured to: in the navigation scenario, adjust the capacitance value of the first capacitor to maintain the resonant frequency of the first radiating branch in the first frequency band.

[0010] In a second aspect, an antenna control method is provided, applied to an electronic device, the electronic device comprising: an antenna assembly, the antenna assembly comprising: a first radiation source; a first radiation branch comprising a first end and a second end and a feed point disposed between the first end and the second end, the first end being configured to be grounded, the feed point being connected to the first radiation source; a first matching circuit disposed between the feed point and the ground, configured to tune a resonance mode of the first radiation branch to a first resonance mode, so that the first radiation branch transmits and receives a first frequency band signal; a second radiation branch comprising a third end and a fourth end and a connection point disposed between the third end and the fourth end, the fourth end being configured to be grounded; a second matching circuit disposed between the connection point and the ground, configured to adjust a resonance mode of the second radiation branch; the method comprising: adjusting the resonance mode of the second radiation branch according to a use scenario of the electronic device, the use scenario comprising a navigation scenario and a non-navigation scenario; in the non-navigation scenario, controlling the second matching circuit to tune the second radiation branch to a second resonance mode, so that the second radiation branch transmits and receives a second frequency band signal; in the navigation scenario, controlling the second matching circuit to tune the second radiation branch to the first resonance mode, so that the second radiation branch and the first radiation branch jointly transmit and receive the first frequency band signal; wherein the first frequency band is a GPS L5 frequency band, and the second frequency band is an MHB frequency band.

[0011] Optionally, the MHB frequency band comprises a plurality of sub-frequency bands; the second matching circuit comprises a plurality of tuning elements, the plurality of tuning elements comprising a first type of tuning element and a second type of tuning element, the first type of tuning element being configured to adjust the resonance frequency of the second radiation branch to a plurality of sub-frequency bands in the MHB frequency band, the second type of tuning element being configured to adjust the resonance frequency of the second radiation branch to a first target frequency band, the first target frequency band being configured such that when the resonance frequency of the second radiation branch is the first target frequency band, the currents of the first radiation branch and the second radiation branch are in the same direction, and the antenna assembly enhances radiation of the first frequency band signal; the method further comprises: in the non-navigation scenario, controlling a first target element in the first type of tuning element to be conductive with the connection point, so as to adjust the resonance frequency of the second radiation branch to a target sub-frequency band; in the navigation scenario, controlling the second type of tuning element to be conductive with the connection point, so as to adjust the resonance frequency of the second radiation branch to the target frequency band.

[0012] Optionally, the second matching circuit further comprises a first switch circuit, the first switch circuit comprises a plurality of first ends and a plurality of second ends, the plurality of first ends are connected with the connection point, the plurality of second ends are respectively connected with the first ends of the plurality of tuning elements, and the second ends of the plurality of tuning elements are all grounded; the method further comprises: adjusting the conduction states of the plurality of first ends and the plurality of second ends of the first switch circuit according to the use scenario, so as to adjust the conduction states of the first type of resonant tuning element and the second type of tuning element and the connection point.

[0013] Optionally, the first matching circuit comprises a first capacitor, a second capacitor and a first inductor; wherein the first end of the first capacitor is connected with the feed point, the second end of the first capacitor is connected with the first end of the second capacitor, the second end of the second capacitor is connected with the first radiation source, the first end of the first inductor is connected with the second end of the first capacitor, and the second end of the first inductor is grounded.

[0014] Optionally, the first capacitor is an adjustable capacitor; and the method further comprises: adjusting the capacitance value of the first capacitor in the navigation scenario, so as to keep the resonant frequency of the first radiation stub in the first frequency band.

[0015] In the technical scheme provided in the embodiments of the present application, by setting an independent matching circuit for the second radiation stub (i.e. the coupling stub) in the electronic device, the resonant mode of the coupling stub is adjusted by using the matching circuit, so that the coupling stub can not only independently perform the transmission and reception of cellular signals with the main radiation stub, but also work in the GPS L5 frequency band according to actual requirements, thereby improving the performance of the electronic device in transmitting and receiving GPS signals and improving the positioning and navigation accuracy of the device. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a schematic diagram of an antenna in an electronic device in the related art.

[0017] Figure 2 is a schematic diagram of an electronic device provided in an embodiment of the present application.

[0018] Figure 3 is a schematic diagram of an electronic device provided in another embodiment of the present application.

[0019] Figure 4 is a simulation result of S parameters of an antenna assembly of an electronic device in a navigation scenario and a non-navigation scenario provided in an embodiment of the present application.

[0020] Figure 5 is a schematic diagram of an electronic device provided in yet another embodiment of the present application.

[0021] Figure 6is a simulation result of antenna efficiency of an antenna assembly of an electronic device in a navigation scene and a non-navigation scene provided by an embodiment of the present application.

[0022] Figure 7 is a schematic diagram of an upper hemisphere proportion of the antenna assembly in the navigation scene.

[0023] Figure 8 is a schematic diagram of an upper hemisphere proportion of the antenna assembly in the non-navigation scene.

[0024] Figure 9 is a schematic diagram of current distribution of the antenna assembly in the navigation scene.

[0025] Figure 10 is a schematic diagram of current distribution of the antenna assembly in the non-navigation scene.

[0026] Figure 11 is a schematic flow chart of an antenna control method provided by an embodiment of the present application.

[0027] Figure 12 is a structural schematic diagram of an electronic device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0028] In order to make the objectives, technical solutions and advantages of the present application clearer, the embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other as long as there is no conflict.

[0029] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the related drawings. The embodiments of the present application are shown in the accompanying drawings. However, the present application can be realized in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application.

[0031] It can be understood that the terms "first", "second" used in the present application are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0032] It is understood that the term "connection" in the following embodiments should be understood as "electrical connection," "communication connection," etc., if the connected circuits, modules, units, etc., have electrical signal or data transmission with each other.

[0033] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising / including” or “having,” etc., specify the presence of the stated features, wholes, steps, operations, components, parts, or combinations thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof. Meanwhile, the term “and / or” as used in this specification includes any and all combinations of the associated listed items.

[0034] Before introducing the technical solutions of the embodiments of this application, we will first give a detailed illustrative description of the electronic devices in the related art and their existing problems in conjunction with the accompanying drawings.

[0035] Taking mobile phones as an example, current mobile phones have high requirements for antenna performance and are space-constrained. Generally, mobile phones have two or more middle high band (MBH) antennas for transmitting and receiving cellular network signals in the 1000MHz-3000MHz frequency band. At the same time, in order to achieve the function of fixed navigation, mobile phones usually also have a Global Positioning System (GPS) antenna. The core frequency bands of GPS include L1, L2 and L5.

[0036] The L1 band is one of the most commonly used frequency bands in global satellite navigation systems. With a center frequency of 1575.42MHz, the L1 band boasts high signal strength and excellent penetration. L1 band navigation signals are suitable for a wide range of applications, including aviation, maritime, vehicle navigation, and consumer electronics such as smartphones.

[0037] The L2 band is the second core band in the global navigation satellite system, primarily used to improve positioning accuracy. Furthermore, the L2 band can achieve even higher positioning accuracy by measuring carrier phase, making it suitable for scientific research, surveying, and measurement applications.

[0038] The L5 band is one of the latest bands in the global satellite navigation system, with a center frequency of 1176.45 MHz. The introduction of the L5 band is mainly to provide higher positioning accuracy and anti-interference performance. The signal of the L5 band has a higher bandwidth and lower multipath effect, which can provide more accurate and reliable positioning information. The application of the L5 band is mainly concentrated in the field of high-precision positioning, such as aerospace, geological exploration and precision agriculture, etc. Due to the introduction of the L5 band, the performance of the global satellite navigation system has been significantly improved, providing users with better positioning and navigation experience. This band is also widely used in electronic devices such as mobile phones to improve their positioning and navigation capabilities.

[0039] Figure 1 The antenna structure of the electronic device in the related art is shown, and it should be noted that Figure 1 The antenna shown in the figure is only part of the antenna in the electronic device, not all.

[0040] Figure 1 The antenna assembly 100 in the figure includes a main branch 110, a parasitic branch 120, a feed source 130, a first tuning circuit 140, and a second tuning circuit 150.

[0041] The main branch 110 includes a ground end 111 and a first free end 112, and a feed point 113 is arranged between the ground end 111 and the first free end 112 and close to the first free end 112. The ground end 111 is used for grounding, and the feed 113 is connected with the feed source through the first tuning circuit 140. The main branch is used for receiving and transmitting GPS L5 band signals under the excitation of the feed source 130, to support the electronic device to perform high-precision positioning and navigation.

[0042] The parasitic branch 120 includes a second free end 121 and a ground end 122, and a connection point 123 is arranged between the second free end 121 and the ground end 122 and close to the second free end 121. The ground end 122 is used for grounding, and the connection point is used for connecting with the second tuning circuit 150. The second tuning circuit 150 is used for controlling the resonant frequency of the parasitic branch, so that the parasitic branch 120 performs MHB as a cellular antenna.

[0043] The working process of the antenna assembly 100 includes: the feed source 130 generates excitation, and radiates GPS L5 band signals through the main branch 110; at the same time, under the coupling action between the main branch 110 and the parasitic branch 120, the parasitic branch 120 receives and transmits MHB band signals, to ensure that the electronic device using the antenna assembly has good cellular communication quality.

[0044] That is, in the above scheme, the main branch 110 is configured to only perform the transceiving of the GPS signal, and the parasitic branch 120 is only used to perform the transceiving of the MHB band signal; and in actual application, for example, the user drives the vehicle in the process, needs to use the mobile phone to navigate, at this time, in order to improve the accuracy and real-time performance of navigation, the performance requirement of the GPS signal antenna is relatively high, and the performance requirement of the cellular antenna is relatively low. However, in the above scheme, the reception of the GPS L5 band and the MHB band is relatively independent, thereby leading to a general user experience.

[0045] In view of the above problems, the electronic device and the method for controlling the antenna provided in the embodiments of the present application are provided, and the technical solutions of the present application will be described in detail below with reference to the drawings.

[0046] Figure 2 FIG. 1 is a schematic structural diagram of an electronic device 20 provided in the embodiments of the present application, Figure 2 The electronic device 20 in FIG. 1 includes an antenna assembly 200, and the antenna assembly 200 includes:

[0047] a first radiation source 210, a first radiation branch 220, a first matching circuit 230, a second radiation branch 240, and a second matching circuit 250.

[0048] The first radiation branch 220 includes a first end 220a and a second end 220b, and a feed point 220c arranged between the first end 220a and the second end 220b, and the feed point 220c is arranged close to the second end 220b.

[0049] The second radiation branch 240 includes a third end 240a and a fourth end 240b, and a connection point 240c arranged between the third end 240a and the fourth end 240b.

[0050] The first radiation branch 220 and the second radiation branch 240 are coupled through a gap between the second end 220b and the third end 240a.

[0051] The first end 220a of the first radiation branch 220 and the fourth end 240c in the second radiation branch 240 are both ground ends, and the feed point 220c in the first radiation branch 220 is connected with the feed source 210 through the first matching circuit 230, and the first matching circuit 230 is used to tune the resonance mode of the first radiation branch 220 to a first resonance mode, so as to perform the transceiving of the first band signal through the first radiation branch 220. The signal of the first band is the signal of the GPS L5 band.

[0052] It should be noted that the structure of the first matching circuit 230 is not limited in the embodiments of the present application, and the first matching circuit 230 can include tuning elements such as capacitance and / or inductance.

[0053] The second matching circuit 250 is arranged between the connection point 240c and the ground GND, and is configured to be capable of adjusting the resonance mode of the second radiating branch 240. Specifically, when the second matching circuit 250 is used to tune the resonance mode of the second radiating branch 240 to the first resonance mode, the second radiating branch 240 can work together with the first radiating branch 210 to perform the transceiving of the signals in the first frequency band, thereby enhancing the signals in the frequency band; when the resonance mode of the second radiating branch 240 is tuned to the second resonance mode, the second radiating branch 240 and the first radiating branch 210 perform the transceiving of the signals in the second frequency band and the first frequency band, respectively, and the transceiving of the signals between the two radiating branches is independent and does not affect each other.

[0054] In the technical scheme provided in the embodiments of the present application, the independent matching circuit is arranged for the second radiating branch (i.e., the coupling branch) in the electronic device, and the resonance mode of the coupling branch is adjusted by using the matching circuit, so that the coupling branch can perform the transceiving of the cellular signals independently of the main radiating branch, and can work in the GPS L5 frequency band according to actual requirements, thereby improving the performance of the electronic device in transceiving the GPS signals and improving the accuracy of positioning and navigation of the device.

[0055] In some embodiments, the second matching circuit 250 is configured to adjust the resonance mode of the second radiating branch according to the use scenario of the electronic device.

[0056] The use scenario of the electronic device herein includes a navigation scenario and a non-navigation scenario. In the navigation scenario, the electronic device needs to rely on the GPS signals for real-time positioning and navigation, and the positioning accuracy requirement is not high; in the non-navigation scenario, the electronic device can be used for performing services such as gaming or calling, and the requirement for the signal strength and signal quality of the GPS signals is relatively low, but the requirement for the strength and quality of the cellular communication signals needs to be met.

[0057] The second matching circuit in the embodiments of the present application is configured to tune the second radiating branch 240 to the second resonance mode in the non-navigation scenario, so that the second radiating branch 240 directly performs the transceiving of the signals in the second frequency band. In this embodiment, the second frequency band is a high frequency band. In this scenario, the first radiating branch 220 and the second radiating branch 240 perform the transceiving of the signals in the GPS L5 frequency band and the MHB frequency band, respectively, and the two radiating branches 220 do not affect each other.

[0058] In the navigation scenario, the second matching circuit 250 is configured to tune the second radiating branch to the first resonance mode, so that the first radiating branch and the second radiating branch work together to perform the transceiving of the signals in the first frequency band (i.e., the GPS L5 frequency band); at this time, the GPS signals are enhanced, which can ensure a good navigation experience.

[0059] By adjusting the resonance state of the second radiation stub according to the application scenario of the electronic device, the ability of the electronic device to receive and transmit signals of the GPS L5 frequency band in the navigation scenario can be enhanced; meanwhile, in the non-navigation scenario, the electronic device can have good communication quality; the technical solution can improve the positioning and navigation accuracy and improve the user experience.

[0060] In some embodiments, the MHB frequency band includes a plurality of sub-frequency bands, which can be band3, band39, band1, band40, band41, and the like.

[0061] Figure 3 is a schematic structural diagram of an electronic device provided by a further embodiment of the application, as shown in Figure 3 The second matching circuit 250 includes a plurality of tuning elements, including a first type of tuning element 251A and a second type of tuning element 251B. The first type of tuning element 251A is used to adjust the resonance frequency of the second radiation stub to a plurality of sub-frequency bands in the MHB frequency band. For example, the first type of tuning element 251A can include a plurality of capacitors. By reasonably configuring the capacitance values of the capacitors, the resonance frequency of the second radiation stub can be adjusted to the center frequency points of the band3, band39, band1, band40, and band41 frequency bands. It should be noted that the above-mentioned first type of tuning element can also be an inductor; or the first type of tuning element can also be a combination of capacitors and inductors, such as capacitors and inductors connected in parallel or in series, etc. The specific structure of the first type of tuning element is not limited in the embodiments of the application.

[0062] The second type of tuning element 251B is used to adjust the resonance frequency of the second radiation stub to a first target frequency band. The first target frequency band is configured such that when the resonance frequency of the second radiation stub is the first target frequency band, the current directions of the first radiation stub and the second radiation stub are the same, and at this time the antenna assembly enhances the radiation of the first frequency band signal.

[0063] As mentioned above, the first frequency band is the GPS L5 frequency band, and the center frequency is 1176.45MHz. The above-mentioned first target frequency can be set to 1350MHz, and at this time the first frequency band signal can be enhanced.

[0064] The second matching circuit 250 is also configured to, in the non-navigation scenario, control a first target element in the first type of tuning element 251A to be conductive with the connection point 240c, so as to adjust the resonant frequency of the second radiating branch 240 to a target sub-band. The target sub-band can be any sub-band in the MHB frequency band, and the first target element can be any of the first type of tuning element 251A and correspond to the target sub-band.

[0065] In the navigation scenario, the second matching circuit 250 is configured to, in the navigation scenario, control a second type of tuning element 251B to be conductive with the connection point 240c, so as to adjust the resonant frequency of the second radiating branch 240 to the target frequency band (e.g., 1350 MHz).

[0066] In some embodiments, as shown in FIG. 2B, the second matching circuit further includes a first switch circuit 252, which includes a plurality of first ends 252A connected with the connection point 240c and a plurality of second ends 252B connected with the first ends of the plurality of tuning elements 251 respectively, and the second ends of the plurality of tuning elements 251 are grounded. Figure 3

[0067] The second matching circuit 250 is also configured to adjust the connection state of the plurality of first ends 252A and the plurality of second ends 252B of the first switch circuit 252 according to the use scenario of the electronic device, so as to adjust the conductive state of the first type of tuning element 251A and the second type of tuning element 251B with the connection point 240c.

[0068] In some embodiments, continuing to refer to FIG. 2B, Figure 3 The first matching circuit 230 includes a first capacitor C1, a second capacitor C2, and a first inductor L1. The first end of the first capacitor C1 is connected with the feed point 210c, the second end is connected with the first end of the second capacitor C2, the second end of the second capacitor C2 is connected with the first radiating source 210, the first end of the first inductor L1 is connected with the second end of the first capacitor C2 (i.e., the node between C1 and C2), and the second end of the first inductor L1 is grounded.

[0069] In some embodiments, the capacitance of the first capacitor C1 is 0.5 pF, the capacitance of the second capacitor C2 is 2.0 pF, and the inductance of the first inductor L1 is 6 nH. At this time, the first matching circuit 230 can control the resonant frequency of the first radiating branch 220 to be 1100 MHz.

[0070] Figure 4 ​The simulation results of the S parameters of the antenna assembly of the electronic device in the navigation scenario and the non-navigation scenario are shown. In the non-navigation scenario, the first radiating branch and the second radiating branch work at the GPS L5 frequency band and the band 3 frequency band respectively, and the center frequency point of the antenna assembly is Figure 4 1.08 GHz and 1.808 GHz shown by points 1 and 2 in the figure; in the navigation scenario, the second matching circuit adjusts the resonant frequency of the second radiating branch to 1.356 GHz shown by point 4 in the figure, at which time the return loss of the antenna assembly at the frequency point of 1.0921 GHz shown by point 3 is small, that is, at this time, the radiation ability of the antenna assembly for the GPS L5 frequency band is enhanced.

[0071] Meanwhile, from Figure 4 points 1 and 3 in the figure, it can be seen that after adjusting the resonant frequency of the second radiating branch, due to the coupling effect between the radiating branches, the frequency of the first radiating branch is pulled up from 1.08 GHz to 1.0921 GHz, and a frequency deviation of 0.0121 GHz occurs.

[0072] In order to eliminate the influence of the above-mentioned frequency deviation on the positioning accuracy, in some embodiments, as shown in Figure 5 , the first capacitor C1 in the first matching circuit 230 is set as an adjustable capacitor, and when the above-mentioned frequency deviation occurs, the first capacitor is fine-tuned, so as to keep the frequency of the first radiating branch at the center frequency of the GPS L5 frequency band.

[0073] Figure 6 The simulation curves of the antenna efficiency of the antenna assembly of the electronic device in the navigation scenario and the non-navigation scenario are shown, and from points 1 and 2, it can be seen that in the navigation scenario and the non-navigation scenario, the antenna efficiency values in the GPS L5 frequency band are-1.8466 dB and-3.2565 dB respectively, and the antenna efficiency is increased by about 1.5 dB.

[0074] Figure 7 and Figure 8 are schematic diagrams of the upper hemisphere proportion of the antenna assembly in the navigation scenario and the non-navigation scenario respectively, Figure 7 and Figure 8 in which the abscissa is the frequency and the ordinate is the proportion. Figure 7 The ratio of the ordinates of points 1 and 2 in the figure is 0.009085 / 0.018636=0.487=48.7%, that is, in the navigation scenario, the upper hemisphere proportion is 48.7%, Figure 8 the ratio of the ordinates of points 1 and 2 in the figure is 0.007521 / 0.015123=0.497=49.7%. It can be seen that in the navigation scenario and the non-navigation scenario, the upper hemisphere proportion changes little, that is, the second radiating branch has little influence on the radiation direction of the GPS L5 frequency band signal.

[0075] Figure 9 and Figure 10 The current distribution of the antenna assembly in the navigation scenario and the non-navigation scenario respectively, from which it can be seen that when the second radiation branch is pulled higher than the first radiation branch, the currents on the two radiation branches are in the same direction, at which time the floor current is strengthened and the floor radiation is strengthened.

[0076] The device embodiments of the present application are described above Figures 1-10 The method embodiments of the present application are described below with reference to the accompanying drawings, and it should be understood that the description of the method embodiments corresponds to the device embodiments. Therefore, the parts not described in detail can be referred to the device embodiments described above.

[0077] Figure 11 is a schematic flowchart of the antenna control method provided by the embodiments of the present application, and the method is applied to an electronic device, which can be the electronic device in any of the embodiments described above. The electronic device includes an antenna assembly: the antenna assembly includes: a first radiation source; a first radiation branch including a first end and a second end and a feed point provided between the first end and the second end, the first end being used for grounding, the feed being connected with the first radiation source; a first matching circuit provided between the feed point and the first radiation source, used for tuning the resonance mode of the first radiation branch to a first resonance mode, to perform the transceiving of a first frequency band signal through the first radiation branch; a second radiation branch including a third end and a fourth end and a connection point provided between the third end and the fourth end, the fourth end being used for grounding; and a second matching circuit provided between the connection point and the ground, used for adjusting the resonance mode of the second radiation branch.

[0078] Figure 11 The method in the above embodiment includes steps S1110-S1120.

[0079] In step S1110, the use scenario of the electronic device is determined, and the use scenario includes a navigation scenario and a non-navigation scenario.

[0080] There are many methods for determining the use scenario of the electronic device, as a possible implementation manner, the type of the application program running in the foreground of the electronic device system can be used for determination, for example, when the "map" application in the electronic device is opened, it can be determined that the current is in the navigation scenario; as another possible implementation manner, the current scenario can also be determined according to the moving speed of the electronic device, for example, when the moving speed of the electronic device is greater than 30km / h, it is determined that the electronic device is currently in the navigation scenario; for example, the use scenario of the electronic device can also be determined by the user of the device, for example, the user can adjust the current state by performing tapping or sliding operation on the screen of the electronic device.

[0081] It can be understood that the above-mentioned ways of determining the use scenario of the electronic device are all examples, and the embodiments of the present application do not make specific limitations thereto.

[0082] When it is determined that the use scenario is the non-navigation scenario, step S1120A is performed, and the second matching circuit is controlled to tune the second radiating branch to a second resonant mode, so that the second radiating branch transmits and receives signals of a second frequency band.

[0083] When it is determined that the use scenario is the navigation scenario, step S1120B is performed, and the second matching circuit is controlled to tune the second radiating branch to a first resonant mode, so that the second radiating branch and the first radiating branch jointly transmit and receive signals of the first frequency band.

[0084] The first frequency band is a GPS L5 frequency band, and the second frequency band is an MHB frequency band.

[0085] Optionally, the MHB frequency band includes a plurality of sub-frequency bands; the second matching circuit includes a plurality of tuning elements, the plurality of tuning elements including first-type tuning elements and second-type tuning elements, the first-type tuning elements being configured to adjust the resonant frequency of the second radiating branch to the plurality of sub-frequency bands in the MHB frequency band, and the second-type tuning elements being configured to adjust the resonant frequency of the second radiating branch to a first target frequency band, the first target frequency band being configured such that, when the resonant frequency of the second radiating branch is the first target frequency band, the currents of the first radiating branch and the second radiating branch are in the same direction, and the antenna assembly enhances radiation of the signals of the first frequency band.

[0086] The method further includes: in the non-navigation scenario, controlling a first target element in the first-type tuning elements to be conductive with the connection point, so as to adjust the resonant frequency of the second radiating branch to a target sub-frequency band; and in the navigation scenario, controlling the second-type tuning elements to be conductive with the connection point, so as to adjust the resonant frequency of the second radiating branch to the target frequency band.

[0087] Optionally, the second matching circuit further includes a first switch circuit, the first switch circuit including a plurality of first ends and a plurality of second ends, the plurality of first ends being connected with the connection point, and the plurality of second ends being respectively connected with first ends of the plurality of tuning elements, second ends of the plurality of tuning elements being all grounded.

[0088] The method further includes: according to the use scenario, adjusting the conduction states of the plurality of first ends and the plurality of second ends of the first switch circuit, so as to adjust the conduction states of the first-type resonant tuning elements and the second-type tuning elements with the connection point.

[0089] Optionally, the first matching circuit includes a first capacitor, a second capacitor and a first inductor; wherein a first end of the first capacitor is connected with the feed point, a second end of the first capacitor is connected with a first end of the second capacitor, a second end of the second capacitor is connected with the first radiation source, a first end of the first inductor is connected with the second end of the first capacitor, and a second end of the first inductor is grounded.

[0090] Optionally, the first capacitor is an adjustable capacitor; and the method further includes: adjusting a capacitance value of the first capacitor to keep the resonant frequency of the first radiation stub in the first frequency band in the navigation scenario.

[0091] The above describes the method embodiment of the present application in combination with Figure 12 An electronic device 1200 is introduced in the embodiments of the present application. The electronic device 1200 can be used to implement the method described in the above method embodiments.

[0092] It should be understood that the electronic device 1200 can be applied to any type of electronic device mentioned above.

[0093] The electronic device 1200 can include one or more processors 1210. The processor 1210 can support the electronic device 1200 to implement the method described in the above method embodiments.

[0094] The processor 1210 can be a general-purpose processor or a special-purpose processor. For example, the processor can be a central processing unit (CPU). Alternatively, the processor can also be other general-purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs) or other programmable logic devices, discrete gates or transistor logic, discrete hardware components, etc. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor.

[0095] The electronic device 1200 can further include one or more memories 1220. The memory 1220 stores a program which can be executed by the processor 1210 to control the electronic device 1200 to perform the method described in the above method embodiments. The memory 1220 can be independent of the processor 1210 or integrated in the processor 1210.

[0096] The electronic device 1200 can further include a transceiver 1230. The processor 1210 can communicate with other devices through the transceiver 1230. For example, the processor 1210 can perform data transceiving with other devices through the transceiver 1230.

[0097] It should be understood that, in the embodiments of the present application, "B corresponding to A" means that B is associated with A, and B can be determined according to A. However, it should also be understood that the determination of B according to A does not mean that B is determined only according to A, but B can also be determined according to A and / or other information.

[0098] It should be understood that the term "and / or" herein is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone. In addition, the character " / " herein generally represents that the front and rear associated objects are in an "or" relationship.

[0099] It should be understood that, in various embodiments of the present application, the size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of the processes should be determined according to its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0100] In several embodiments provided by the present application, it should be understood that the disclosed system and device can be implemented by other means. For example, the above-mentioned device embodiments are only illustrative, for example, the division of the units is only a logical function division, and actual implementation can have another division manner, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the displayed or discussed each other can be indirect coupling or communication connection through some interface, device or unit, which can be electrical, mechanical or other forms.

[0101] The units described as separate components can or can not be physically separate, and the components displayed as units can or can not be physical units, that is, they can be located in one place, or can be distributed on multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiments of the present application.

[0102] In addition, each functional unit in each embodiment of the present application can be integrated into one processing unit, or each unit can exist physically, or two or more units can be integrated into one unit.

[0103] In the above embodiments, all or part of the embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented by software, all or part of the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) manner. The computer readable storage medium can be any available medium that can be read by a computer or a data storage device such as a server, data center and the like integrated with one or more available media sets. The available media can be magnetic media (for example, floppy disk, hard disk, magnetic tape), optical media (for example, digital video disc (DVD)) or semiconductor media (for example, solid state disk (SSD)) and the like.

[0104] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An electronic device, characterized in that, Includes an antenna assembly, the antenna assembly comprising: First radiation source; The first radiating branch includes a first end and a second end, and a feed point disposed between the first end and the second end. The first end is used for grounding, and the feed point is connected to the first radiating source. A first matching circuit is disposed between the feed point and the first radiation source, for tuning the resonant mode of the first radiation stub to a first resonant mode, so as to transmit and receive signals in the first frequency band through the first radiation stub. The second radiating branch includes a third end and a fourth end, and a connection point disposed between the third end and the fourth end, wherein the fourth end is used for grounding; A second matching circuit is disposed between the connection point and ground for adjusting the resonant mode of the second radiating stub, wherein the resonant mode of the second radiating stub includes the first resonant mode and the second resonant mode. When the resonant mode of the second radiating stub is the first resonant mode, the second radiating stub and the first radiating stub jointly transmit and receive signals in the first frequency band. When the resonant mode of the second radiating stub is the second resonant mode, the second radiating stub performs the transmission and reception of signals in the second frequency band; The first frequency band is the GPS L5 band, and the second frequency band is the MHB band; The MHB band includes multiple sub-bands; the second matching circuit includes multiple tuning elements, which include a first type of tuning element and a second type of tuning element. The first type of tuning element is used to adjust the resonant frequency of the second radiating stub to multiple sub-bands in the MHB band, and the second type of tuning element is used to adjust the resonant frequency of the second radiating stub to a first target band. The first target band is configured such that when the resonant frequency of the second radiating stub is the first target band, the currents of the first radiating stub and the second radiating stub are in the same direction, and the antenna assembly enhances the radiation of the first band signal. The second matching circuit further includes a first switching circuit, which includes multiple first terminals and multiple second terminals. The multiple first terminals are connected to the connection point, and the multiple second terminals are respectively connected to the first terminals of the multiple tuning elements. The second terminals of the multiple tuning elements are all grounded. The second matching circuit is further configured to: adjust the conduction state of multiple first terminals and multiple second terminals of the first switching circuit according to the usage scenario, so as to adjust the conduction state of the first type of tuning element and the second type of tuning element with the connection point.

2. The electronic device according to claim 1, characterized in that, The second matching circuit is also used to: adjust the resonant mode of the second radiating stub according to the usage scenario of the electronic device; The usage scenarios include navigation scenarios and non-navigation scenarios. In the non-navigation scenario, the second matching circuit is used to tune the second radiating stub to a second resonant mode so that the second radiating stub can transmit and receive signals in the second frequency band. In the navigation scenario, the second matching circuit is used to tune the second radiating stub to a first resonant mode so that the second radiating stub and the first radiating stub can jointly transmit and receive signals in the first frequency band.

3. The electronic device according to claim 2, characterized in that, The second matching circuit is further configured to: in the non-navigation scenario, control the first target element in the first type of tuning element to be connected to the connection point, so as to adjust the resonant frequency of the second radiating stub to the target sub-band; In the navigation scenario, the second type of tuning element is controlled to conduct with the connection point so as to adjust the resonant frequency of the second radiating branch to the first target frequency band.

4. The electronic device according to claim 1, characterized in that, The first matching circuit includes a first capacitor, a second capacitor, and a first inductor; Wherein, the first end of the first capacitor is connected to the feed point, the second end of the first capacitor is connected to the first end of the second capacitor, the second end of the second capacitor is connected to the first radiation source, the first end of the first inductor is connected to the second end of the first capacitor, and the second end of the first inductor is grounded.

5. The electronic device according to claim 4, characterized in that, The first capacitor is an adjustable capacitor, and the first capacitor is configured to: in a navigation scenario, adjust the capacitance value of the first capacitor to keep the resonant frequency of the first radiating branch in the first frequency band.

6. An antenna control method applied to an electronic device, the electronic device including an antenna assembly: The antenna assembly includes: First radiation source; The first radiating branch includes a first end and a second end, and a feed point disposed between the first end and the second end. The first end is used for grounding, and the feed point is connected to the first radiating source. A first matching circuit is disposed between the feed point and the first radiation source, for tuning the resonant mode of the first radiation stub to a first resonant mode, so as to transmit and receive signals in the first frequency band through the first radiation stub. The second radiating branch includes a third end and a fourth end, and a connection point disposed between the third end and the fourth end, wherein the fourth end is used for grounding; A second matching circuit is disposed between the connection point and ground to adjust the resonant mode of the second radiating stub; The method is characterized by comprising: Determine the usage scenarios of the electronic devices, including navigation scenarios and non-navigation scenarios; In the non-navigation scenario, the second matching circuit is controlled to tune the second radiating stub to the second resonant mode so that the second radiating stub can transmit and receive signals in the second frequency band. In the navigation scenario, the second matching circuit is controlled to tune the second radiating stub to the first resonant mode, so that the second radiating stub and the first radiating stub can jointly transmit and receive signals in the first frequency band. The first frequency band is the GPS L5 band, and the second frequency band is the MHB band; The MHB band includes multiple sub-bands; The second matching circuit includes multiple tuning elements, which include a first type of tuning element and a second type of tuning element. The first type of tuning element is used to adjust the resonant frequency of the second radiating stub to multiple sub-bands in the MHB band. The second type of tuning element is used to adjust the resonant frequency of the second radiating stub to a first target band. The first target band is configured such that when the resonant frequency of the second radiating stub is the first target band, the currents of the first radiating stub and the second radiating stub are in the same direction, and the antenna assembly enhances the radiation of the first band signal. The method further includes: in the non-navigation scenario, controlling the first target element in the first type of tuning element to be connected to the connection point, so as to adjust the resonant frequency of the second radiating stub to the target sub-band; In the navigation scenario, the second type of tuning element is controlled to conduct with the connection point so as to adjust the resonant frequency of the second radiating branch to the first target frequency band.

7. The method according to claim 6, characterized in that, The second matching circuit further includes a first switching circuit, which includes multiple first terminals and multiple second terminals. The multiple first terminals are connected to the connection point, and the multiple second terminals are respectively connected to the first terminals of the multiple tuning elements. The second terminals of the multiple tuning elements are all grounded. The method further includes: adjusting the conduction state of multiple first terminals and multiple second terminals of the first switching circuit according to the usage scenario, so as to adjust the conduction state of the first type of tuning element and the second type of tuning element with the connection point.

8. The method according to claim 6, characterized in that, The first matching circuit includes a first capacitor, a second capacitor, and a first inductor; Wherein, the first end of the first capacitor is connected to the feed point, the second end of the first capacitor is connected to the first end of the second capacitor, the second end of the second capacitor is connected to the first radiation source, the first end of the first inductor is connected to the second end of the first capacitor, and the second end of the first inductor is grounded.

9. The method according to claim 8, characterized in that, The first capacitor is an adjustable capacitor; The method further includes: in the navigation scenario, adjusting the capacitance value of the first capacitor to maintain the resonant frequency of the first radiating stub in the first frequency band.

Images